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Method and device for lubricating cylinders

A technology of cylinders and equipment, applied in mechanical equipment, lubricating parts, pressure lubricants, etc., can solve the problems of high downtime, excess lubricating oil, lack of lubricating oil, etc., and achieve the effect of short downtime

Active Publication Date: 2015-11-18
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However this leads to excessively high downtimes in the event of a desire to change the mixing ratio
Since in both cases only the mixing ratio is changed, however, the total quantity delivered to the cylinders is not changed, which in both cases can also lead to an excess or lack of lubricant

Method used

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  • Method and device for lubricating cylinders
  • Method and device for lubricating cylinders
  • Method and device for lubricating cylinders

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Embodiment Construction

[0027] The main field of application of the invention is large internal combustion engines with crossheads, especially large two-stroke diesel engines with direct-flow scavenging, which are usually driven with heavy fuel oil. Heavy fuel oils can contain relatively high amounts of sulfur, which when combusted can lead to the formation of sulfuric acid and the like. Acids can attack the sliding surfaces of the piston and / or the cylinder liner and must therefore be neutralized to prevent this attack.

[0028] The construction and mode of operation of large engine types with direct-flow scavenging, such as two-stroke large diesel engines, are known per se and therefore only what is necessary for understanding the invention will be explained below.

[0029] figure 1Cylinder 1 of such an engine is shown. Usually a plurality of such cylinders 1 are provided, preferably arranged in a row. An associated piston, not shown in detail here, which forms a movable delimitation of the comb...

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Abstract

The invention relates to the lubrication of the cylinders (1) of internal combustion engines that burn acid-generating fuels, wherein several lubricants having different neutralization capability are used. According to the invention an optimization of the lubrication and of the acid neutralization and thus high operational reliability and economic efficiency can be achieved in that at least one lubricant having a neutralization capability that does not exceed the neutralization requirement in any possible use case and at least one lubricant having an neutralization capability that is not less than the neutralization requirement in any possible use case are used and that the lubricants used are individually fed to the cylinder interior in metered amounts and are mixed in the cylinder interior.

Description

technical field [0001] The present invention relates to a method and a device for lubricating cylinders in a piston internal combustion engine combusting acid-forming fuels, wherein a plurality of lubricating substances with different neutralizing capacities are used, each lubricating substance being individually matched to the desired neutralizing capacity. The ratios related to demand and lubrication demand are blended with each other. Background technique [0002] The terms "cylinder" and "cylinder liner" are used alternatively below and it is understood that both generally denote a component having at least one cylinder bore for a piston moving up and down so as to limit the associated combustion The volume of the chamber is also included in the protection scope of the claims. Specific types of lubrication for the working surfaces of the cylinder or cylinder housing are found mainly in large engines, which are often crosshead and can be used to separate the lubrication ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M11/02F01M1/08
CPCF01M1/08F01M9/02F01M2001/083F01M2011/022
Inventor S·波尔森
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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